Supplemental Condensed Consolidating Financial Information (Schedule of Condensed Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Millions			6 Months Ended	9 Months Ended
	Jul. 01, 2017	May 18, 2015	Jun. 30, 2017	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net cash (used in) provided by operating activities				$ 617	$ 810
Cash flows from investing activities:
Acquisitions of facilities and other related equipment				(4)	(122)
Purchases of property and equipment				(428)	(561)
Proceeds from disposition of hospitals and other ancillary operations	$ 424		$ 414	1,666	12
Proceeds from sale of property and equipment				4	10
Purchases of available-for-sale securities				(85)	(395)
Proceeds from sales of available-for-sale securities				133	386
Proceeds from sale of investments in unconsolidated affiliates					403
Distribution from Quorum Health Corporation		$ 1,200			1,219
Increase in other investments				(95)	(201)
Net cash provided by investing activities				1,191	751
Cash flows from financing activities:
Repurchase of restricted stock shares for payroll tax withholding requirements				(5)	(5)
Deferred financing costs and other debt-related costs				(66)	(22)
Proceeds from noncontrolling investors in joint ventures				5
Redemption of noncontrolling investments in joint ventures				(5)	(19)
Distributions to noncontrolling investors in joint ventures				(79)	(69)
Borrowings under credit agreements				839	3,929
Issuance of long-term debt				3,100
Proceeds from receivables facility				26	66
Repayments of long-term indebtedness				(5,271)	(5,492)
Net cash used in financing activities				(1,456)	(1,612)
Net change in cash and cash equivalents				352	(51)
Cash and cash equivalents at beginning of period			238	238	184
Cash and cash equivalents at end of period				590	133
Parent Company [Member]
Cash flows from operating activities:
Net cash (used in) provided by operating activities				(44)	(13)
Cash flows from financing activities:
Repurchase of restricted stock shares for payroll tax withholding requirements				(5)	(5)
Changes in intercompany balances with affiliates, net				49	18
Net cash used in financing activities				44	13
Issuer [Member]
Cash flows from operating activities:
Net cash (used in) provided by operating activities				(228)	(322)
Cash flows from investing activities:
Distribution from Quorum Health Corporation					1,219
Net cash provided by investing activities					1,219
Cash flows from financing activities:
Deferred financing costs and other debt-related costs				(65)	(22)
Changes in intercompany balances with affiliates, net				1,414	529
Borrowings under credit agreements				795	3,905
Issuance of long-term debt				3,100
Repayments of long-term indebtedness				(5,016)	(5,309)
Net cash used in financing activities				228	(897)
Other Guarantor [Member]
Cash flows from operating activities:
Net cash (used in) provided by operating activities				645	479
Cash flows from investing activities:
Acquisitions of facilities and other related equipment					(3)
Purchases of property and equipment				(278)	(359)
Proceeds from disposition of hospitals and other ancillary operations				593	13
Proceeds from sale of property and equipment				4	5
Purchases of available-for-sale securities				(58)	(171)
Proceeds from sales of available-for-sale securities				84	157
Proceeds from sale of investments in unconsolidated affiliates					403
Increase in other investments				(73)	(129)
Net cash provided by investing activities				272	(84)
Cash flows from financing activities:
Changes in intercompany balances with affiliates, net				(525)	(384)
Borrowings under credit agreements				27	23
Repayments of long-term indebtedness				(61)	(49)
Net cash used in financing activities				(559)	(410)
Net change in cash and cash equivalents				358	(15)
Cash and cash equivalents at beginning of period			171	171	37
Cash and cash equivalents at end of period				529	22
Non-Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net cash (used in) provided by operating activities				244	666
Cash flows from investing activities:
Acquisitions of facilities and other related equipment				(4)	(119)
Purchases of property and equipment				(150)	(202)
Proceeds from disposition of hospitals and other ancillary operations				1,073	(1)
Proceeds from sale of property and equipment					5
Purchases of available-for-sale securities				(27)	(224)
Proceeds from sales of available-for-sale securities				49	229
Increase in other investments				(22)	(72)
Net cash provided by investing activities				919	(384)
Cash flows from financing activities:
Deferred financing costs and other debt-related costs				(1)
Proceeds from noncontrolling investors in joint ventures				5
Redemption of noncontrolling investments in joint ventures				(5)	(19)
Distributions to noncontrolling investors in joint ventures				(79)	(69)
Changes in intercompany balances with affiliates, net				(938)	(163)
Borrowings under credit agreements				17	1
Proceeds from receivables facility				26	66
Repayments of long-term indebtedness				(194)	(134)
Net cash used in financing activities				(1,169)	(318)
Net change in cash and cash equivalents				(6)	(36)
Cash and cash equivalents at beginning of period			$ 67	67	147
Cash and cash equivalents at end of period				$ 61	$ 111